CN105842589A - Device, system and method for detecting GIS local discharge - Google Patents
Device, system and method for detecting GIS local discharge Download PDFInfo
- Publication number
- CN105842589A CN105842589A CN201610160594.1A CN201610160594A CN105842589A CN 105842589 A CN105842589 A CN 105842589A CN 201610160594 A CN201610160594 A CN 201610160594A CN 105842589 A CN105842589 A CN 105842589A
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- Prior art keywords
- gis
- hand hole
- partial discharge
- detection device
- windowing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1245—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of line insulators or spacers, e.g. ceramic overhead line cap insulators; of insulators in HV bushings
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a device, a system and a method for detecting GIS local discharge. The system comprises a GIS local discharge detection device, a GIS bus and a monitoring center, wherein the GIS local discharge detection device is arranged on a monitoring node of the GIS bus and transmits the collected data to a monitoring center; the GIS local discharge detection device comprises a window hand hole cover, an ultraviolet ray sensor, a signal processing circuit board and a hand hole arranged on the GIS bus, wherein the handle hole, the window hand hole cover and the signal processing circuit are successively connected; the ultraviolet ray sensor is arranged between the window hand hole cover and the signal processing circuit board; and the ultraviolet ray sensor is connected to the signal processing circuit board. The device, the system and the method for detecting GIS local discharge can perform real-time monitoring on the GIS local discharge, and is strong in resisting interference, low in mistake report and easy in usage.
Description
Technical field
The present invention relates to the technology in a kind of electric power monitoring field, specifically a kind of GIS partial discharge detection device and system thereof
And method.
Background technology
Gas-insulated switch (gas insulated switchgear, GIS) be power transmission and transformation and field of power transformation suffer from wide variety of
Important power equipment, it is by primary equipment in addition to transformator in a transformer station, including chopper, current transformer, every
Form an organic whole after leaving pass, earthed switch, bus, the optimized design of inlet-outlet sleeve, and be filled with SF6Gas conduct
Dielectric.Owing to GIS device built-in electrical insulation electric field intensity is high, if small insulation defect occurs, it is easy to cause insulation breakdown etc.
Accident occurs.Simultaneously as GIS device is different from conventional electrical devices can intuitively make an inspection tour the feature watched, when a failure occurs it,
Maintenance complexity, repair time is long, and influence area is big, and consequence is serious.
According to statistics, most GIS internal fault causes due to defects of insulator.Such as, the U.S. is put into operation
The fault that GIS occurs carries out statistics and finds, relates to insulator creeping discharge proportion the highest.For another example, according to Guangdong Power Grid Corporation
Service data, there is GIS internal fault 17 altogether from 2009 to 2011 years in the said firm, wherein 16 all with insulator
Relevant.
Insulator is the important insulating element of GIS, such as table under being very easy to leave in GIS manufacture, dispensing and installation process
Face scratch or projection, surface attachment conductive particle etc. conceal defects, and when equipment runs, will produce a large amount of local near these defects
Electric discharge, thus cause equipment fault.Owing to local discharge signal contains abundant state of insulation information, GIS can not only be detected
The defect manufactured and introduce in installation process, and can effectively detect the generation position of insulation fault and serious journey in on-line monitoring
Degree.Therefore, accurately judging the shelf depreciation within GIS device and get rid of hidden danger in time is prevention insulation fault, guarantee GIS
The important measures of safe and reliable operation.
According to existing document, current GIS partial discharge detection method is mainly pulse current method, supercritical ultrasonics technology and hyperfrequency method.
The shortcoming of pulse current method is that signal to noise ratio is low, on-the-spot serious interference, it is impossible to be efficiently applied to on-line monitoring；Although supercritical ultrasonics technology is not subject to
The interference of strong electromagnetic environment in power station, but sensitivity is low, serious by outdoor noise jamming, it is only able to detect the strongest shelf depreciation
And mechanical vibration, it is difficult to reach the requirement of GIS partial discharge detection；Hyperfrequency method can overcome on-the-spot electromagnetism spoke to a certain extent
The impact penetrated, but it needs the uhf sensor of design specialized, relatively costly, and it is difficult to demarcation and the electric discharge of discharge capacity
Be accurately positioned.
In traditional detection method, in supercritical ultrasonics technology, hyperfrequency method, the location of point of discharge is needed substantial amounts of experimental data and
Complicated algorithm just can complete, and the factor such as radial position of its discharge signal and discharge channel length, point of discharge is relevant, single
Detection signal be difficult to reflect the size of discharge capacity.
Through the retrieval of prior art is found, Chinese patent literature CN10479500A, publication date 2015.7.1, open
A kind of GIS device with electric discharge observation window, designs observation window in the side of GIS cavity or end face, and the diameter of observation window and
Central axis inclination angle over the ground can determine according to the bus length in the disc insulator frustum cross section in GIS cavity and inclination angle；Described sight
Examine window and use far ultraviolet quartz glass.But this technology realizes relatively costly, GIS cavity body structure is changed relatively big, introduce extra
Potential safety hazard, and it is only applicable under laboratory condition the diagnostic analysis to GIS partial discharge, it is impossible to when realizing GIS on-line operation
The purpose that shelf depreciation is monitored in real time.
Summary of the invention
The present invention is directed to deficiencies of the prior art, propose a kind of GIS partial discharge detection device and system and method thereof,
By arranging Ultraviolet sensor outside the hand hole cover of windowing corresponding at monitoring nodes such as CT, FES, DS of GIS or buses, it is achieved right
Shelf depreciation and the conductor temperature of each monitoring node of GIS are monitored in real time, simultaneously by signal paths such as optical fiber by Monitoring Data
It is sent to Surveillance center.
The present invention is achieved by the following technical solutions:
The present invention relates to a kind of GIS partial discharge detection device, including: hand hole cover of windowing, Ultraviolet sensor, signal processing electricity
Road plate and the hand hole being arranged on GIS bus, wherein: hand hole, hand hole cover of windowing are sequentially connected with signal processing circuit board, ultraviolet
Sensor is arranged between window and the signal processing circuit board of hand hole cover of windowing, and Ultraviolet sensor and signal processing circuit board phase
Even.
It is provided with waterproof case outside described signal processing circuit board.
Described waterproof case is connected with hand hole cover of windowing.
Described waterproof case and window and be provided with waterproof grommet between hand hole cover.
The window periphery of described hand hole cover of windowing is respectively arranged with sealing structure.
Described sealing structure is connected by curved cover plate with the inner side of hand hole cover of windowing.
Described sealing structure includes: anti-gas-leak sealing ring and sealing retainer ring, wherein: it is airtight that sealing retainer ring is arranged at leakproof
Outside seal.
Described Ultraviolet sensor includes but not limited to: the semiconductor device such as photomultiplier tube, image intensifier.
The window of described hand hole cover of windowing is ultraviolet permeable material.
Described ultraviolet permeable material includes but not limited to: sapphire, JGS1 or CaF2。
The present invention relates to a kind of GIS partial discharge detecting system, including: GIS bus, above-mentioned GIS partial discharge detection device
And Surveillance center, wherein: GIS partial discharge detection device is arranged on the monitoring node of GIS bus, and the data that will collect
Transmission is to Surveillance center.
Described monitoring node includes but not limited to: chopper, current transformer, voltage transformer, disconnecting switch and ground connection are opened
Close.
The mode of described transmission data includes but not limited to: RS485, optical fiber.
The present invention relates to the GIS partial discharge detection method of said system, comprise the following steps:
The first step, on GIS hand hole cover, utilize the method perforate of machining, aperture ultraviolet window is filled and sealed.
Second step, at window place ultraviolet detector, adjusting device direction so that it is investigative range can cover whole insulating basin.
3rd step, ultraviolet detector is utilized to gather the Partial discharge signal on insulating basin, by the signal collected through signal processing electricity
Road plate transmits to Surveillance center after processing.
Technique effect
Compared with prior art, owing to GIS belongs to hermetic container, there is not the interference of other spectrum, the present invention uses optics side
Method detection GIS partial discharge position and conductor temperature, background radiation " clean ", strong interference immunity, to the judgement of electric discharge phenomena more
Intuitively, and the overall structure of GIS cavity is not modified, the electromagnetic field within GIS will not be damaged, GIS can be realized
The Fast Installation of local discharge detection device and changeing.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is scheme of installation of the present invention；
Fig. 3 is GIS partial discharge detecting system schematic diagram；
In figure: 1 is waterproof case, 2 is signal processing circuit board, and 3 is waterproof grommet, and 4 is hand hole cover of windowing, and 5 is hands
Hole, 6 is anti-gas-leak sealing ring, and 7 is window, and 8 is Ultraviolet sensor, and 9 for sealing retainer ring, and 10 is curved cover plate, and 11 are
Insulator arc-over position, 12 is GIS bus, and 13 is conductor.
Detailed description of the invention
Elaborating embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention,
Give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
As it is shown in figure 1, the present embodiment relates to a kind of GIS partial discharge detection device, including: waterproof case 1, hand hole of windowing
Lid 4, Ultraviolet sensor 8, signal processing circuit board 2 and the hand hole 5 that is arranged on GIS bus 12, wherein: hand hole 5, open
Window hand hole cover 4, signal processing circuit board 2 and waterproof case 1 are sequentially connected, and Ultraviolet sensor 8 is arranged at hand hole cover 4 of windowing
Between window 7 and signal processing circuit board 2, and Ultraviolet sensor 8 is connected with signal processing circuit board 2.
Described waterproof case 1 and window and be provided with waterproof grommet 3 between hand hole cover 4.
The material of described waterproof grommet 3 includes but not limited to: EPDM or butyronitrile.
Window 7 both sides of described hand hole cover 4 of windowing are respectively arranged with sealing structure.
Described sealing structure is connected by curved cover plate 10 with the inner side of hand hole cover 4 of windowing.
Described sealing structure includes: anti-gas-leak sealing ring 6 and sealing retainer ring 9, wherein: seal retainer ring 9 and be arranged at anti-
Outside leak sealing circle 6.
Described Ultraviolet sensor includes but not limited to: the semiconductor device such as photomultiplier tube, image intensifier.
The window 7 of described hand hole cover 4 of windowing is ultraviolet permeable material.
Described ultraviolet permeable material includes but not limited to: sapphire, JGS1 or CaF2。
As shown in Figures 2 and 3, the GIS partial discharge detecting system that the present embodiment relates to includes: GIS bus 12, described
GIS partial discharge detection device and Surveillance center, wherein: GIS partial discharge detection device is arranged at the monitoring joint of GIS bus 12
On point, and the data collected are transmitted to Surveillance center.
Described monitoring node includes but not limited to: chopper, current transformer, voltage transformer, disconnecting switch and ground connection are opened
Close.
The mode of described transmission data includes but not limited to: ZigBee, RS485 or optical fiber.
When using Ultraviolet sensor, when shelf depreciation occurs in the insulator arc-over position 11 of monitoring node, Ultraviolet sensor connects
Receive the ultraviolet radiation that electric discharge produces, and be converted into signal of telecommunication output, provide early warning signal, by signal processing circuit board 2
It is analyzed the signal of telecommunication collected judging, and sends data to Surveillance center.
In GIS actual moving process, when shelf depreciation occurs in the disc insulator of GIS bus 12, attached at discharge position
Closely can produce ultraviolet radiation, wave band, at 240nm～400nm, is arranged on the Ultraviolet sensor windowed in hand hole cover 4 and can sense this
Radiation signal.
The present embodiment is when Seal Design, by strengthening the compression ratio of waterproof grommet 3, and strictly control waterproof grommet 3 with
The surface roughness of window 7 material, is preferably minimized the year leak rate of GIS cavity.
The sealing structure of window 7 periphery is effectively shielded by described curved cover plate 10, prevents from installing in sealing retainer ring 9
Time occur tip, to GIS electric field produce destroy.
The present embodiment relates to the GIS partial discharge detection method of said system, comprises the following steps:
The first step, on GIS hand hole cover, utilize the method perforate of machining, aperture ultraviolet window is filled and sealed.
Second step, at window place ultraviolet detector, adjusting device direction so that it is investigative range can cover whole insulating basin.
3rd step, ultraviolet detector is utilized to gather the Partial discharge signal on insulating basin, by the signal collected through signal processing electricity
Road plate transmits to Surveillance center after processing.
Owing to the parts that GIS device is different all have hand hole to design, therefore the present embodiment can be real without too much changing GIS
Now the deploying to ensure effective monitoring and control of illegal activities of a large amount of monitoring nodes.Owing to there is not the interference of other spectrum inside GIS, therefore the present embodiment strong interference immunity, by mistake
Report rate is low, and when there is warning signal, can quickly navigate to concrete monitoring node and overhaul, save substantial amounts of manpower
Material resources.
Claims (8)
1. a GIS partial discharge detection device, it is characterised in that including: hand hole cover of windowing, Ultraviolet sensor, signal processing
Circuit board and the hand hole being arranged on GIS bus are wherein: hand hole, hand hole cover of windowing are sequentially connected with signal processing circuit board, purple
Outer sensor is arranged between window and the signal processing circuit board of hand hole cover of windowing, and Ultraviolet sensor and signal processing circuit board
It is connected.
GIS partial discharge the most according to claim 1 detection device, is characterized in that, outside described signal processing circuit board
It is provided with waterproof case, and waterproof case is connected with hand hole cover of windowing.
GIS partial discharge the most according to claim 2 detection device, is characterized in that, described waterproof case and hand hole of windowing
Waterproof grommet it is provided with between lid.
GIS partial discharge the most according to claim 1 detection device, is characterized in that, the window two of described hand hole cover of windowing
Side is respectively arranged with sealing structure, seals structure and is connected by curved cover plate with the inner side of hand hole cover of windowing.
GIS partial discharge the most according to claim 4 detection device, is characterized in that, described sealing structure includes: leakproof
Airtight seal and sealing retainer ring, wherein: seal retainer ring and be arranged at outside anti-gas-leak sealing ring.
GIS partial discharge the most according to claim 1 detection device, is characterized in that, the window of described hand hole cover of windowing is
Ultraviolet permeable material.
7. a GIS partial discharge detecting system, it is characterised in that including: GIS bus, as described in above-mentioned any claim
GIS partial discharge detection device and Surveillance center, wherein: described GIS partial discharge detection device is arranged at GIS bus
On monitoring node, and the data collected are transmitted to Surveillance center；
Described monitoring node includes but not limited to: chopper, current transformer, voltage transformer, disconnecting switch and earthed switch.
8. the GIS partial discharge detection method of a system according to claim 7, it is characterised in that comprise the following steps:
The first step, on GIS hand hole cover, utilize the method perforate of machining, aperture ultraviolet window is filled and sealed；
Second step, at window place ultraviolet detector, adjusting device direction so that it is investigative range can cover whole insulating basin；
3rd step, ultraviolet detector is utilized to gather the Partial discharge signal on insulating basin, by the signal collected through signal processing circuit
Plate transmits to Surveillance center after processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610160594.1A CN105842589A (en) | 2016-03-21 | 2016-03-21 | Device, system and method for detecting GIS local discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610160594.1A CN105842589A (en) | 2016-03-21 | 2016-03-21 | Device, system and method for detecting GIS local discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105842589A true CN105842589A (en) | 2016-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610160594.1A Pending CN105842589A (en) | 2016-03-21 | 2016-03-21 | Device, system and method for detecting GIS local discharge |
Country Status (1)
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| CN (1) | CN105842589A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107505552A (en) * | 2017-10-16 | 2017-12-22 | 云南电网有限责任公司电力科学研究院 | The lower shelf depreciation high-frequency signal extraction element of steep-front impact and measuring system |
| CN109975676A (en) * | 2019-05-05 | 2019-07-05 | 国网江苏省电力有限公司 | The monitoring device and system of air insulating device |
| CN110308344A (en) * | 2019-06-19 | 2019-10-08 | 深圳供电局有限公司 | Detect robot |
| CN112415345A (en) * | 2020-11-23 | 2021-02-26 | 国网辽宁省电力有限公司电力科学研究院 | Distribution insulator and peripheral electrical insulator system defect characteristic detection platform thereof |
| CN114518474A (en) * | 2022-02-16 | 2022-05-20 | 国网江苏省电力有限公司无锡供电分公司 | Partial discharge signal acquisition device and method based on super-sensitive optical array |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112415345A (en) * | 2020-11-23 | 2021-02-26 | 国网辽宁省电力有限公司电力科学研究院 | Distribution insulator and peripheral electrical insulator system defect characteristic detection platform thereof |
| CN114518474A (en) * | 2022-02-16 | 2022-05-20 | 国网江苏省电力有限公司无锡供电分公司 | Partial discharge signal acquisition device and method based on super-sensitive optical array |
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Application publication date: 20160810 |